2.0.0-rc.1

• Full nullable support introduced with C# 8
• Rename Option.From -> Option.FromNullable and remove overload that takes non-nullable value types.
• Use Func<T, bool> instead of Predicate<T> in predicate composition functions (Functional.All, Functional.Any, Functional.Not),
  because most APIs in System use Func.
• Functional.Any now returns false when the given list of predicates is empty.
• The Each extension method on IEnumerable<T> has been renamed to ForEach.
• Unify Option<T>.ToEnumerable and Yield to ToEnumerable
• Remove Reader monad based on await.
• Exception created by Result monad contains valid stack trace

1.8.1

• Publish symbols package

1.8.0

• Added overload for AndThen which flattens the Option
• Add Where method to Option<T>, which allows filtering the Option by a predicate.
• Add overload for Option<T>.SelectMany that takes only a selector.
• Add WhereNotNull extension method for IEnumerable<T>.

1.7.0

• Add nullability annotations to everything except for Monads.Reader.
• Add a function for creating an Option<T> from a nullable value: Option.From.
• Either.Match now throws when called on an Either value created using default(Either<L, R>).
• Add True and False functions to public API
• Match of Result Monad accepts actions
• Add FirstOrNone, LastOrNone and SingleOrNone extension functions

1.6.0

• Add ToEnumerable function to Option<T>.
• Add WhereSelect extension function for IEnumerable<T>.
• Add missing overload for nullary actions to ActionToUnit.